Safety Valves

We sell a standard range of safety valves ideal for a wide variety of compressed air applications. Choose from preset and adjustable units, with sizes ranging from 1/4" to 1".

What does the relief capacity for safety valves depend on? It depends on the relief discharge area, the temperature of the gas, the compressibility factor of the actual gas, and the geometry of the safety valve. A safety relief valve should be able to relieve the capacity of the connected compressor at its operating pressure. It is important to understand that the relief pressure can't be set higher than the maximum working pressure of any of the equipment in the system. The valve could start leaking if the operating pressure is right below the relief pressure of the valve.

Therefore, it is considered best practice to set the relief pressure 10% above the working pressure of the system. A relief valve is designed to open at a predetermined set pressure in order to protect pressure vessels and other equipment from exposure to pressures that are above their design limits.

Safety Valves Form